Maximum Depth of Binary Tree
Given a binary tree, find its maximum depth.
The maximum depth is the number of nodes along the longest path from the root node down to the farthest leaf node.
/**
* Definition for binary tree * public class TreeNode { * int val; * TreeNode left; * TreeNode right; * TreeNode(int x) { val = x; } * } */public class Solution { public int maxDepth(TreeNode root) { if(root == null) return 0; else { int depthLeft = maxDepth(root.left) + 1; int depthRight = maxDepth(root.right) + 1; if(depthLeft >= depthRight) return depthLeft; else return depthRight; } }}